Dynamic models in tropical hygiene.
D000818:Animals; D003140:Communicable Disease Control; D004199:Disease Vectors; D006373:Helminthiasis / Q000517:prevention & control*; D006801:Humans; D006920:Hygiene; D008722:Methods; D008962:Models, Theoretical; D012499:Sanitation; D012552:Schistosomiasis / Q000453:epidemiology; D012908:Snails; D014330:Tropical Medicine; D014881:Water Supply